Interpretation:
Merits and demerits of short half life of radioisotopes used in medical applications are to be stated.
Concept introduction:
In a nuclear reaction, unstable nuclide disintegrates into stable nuclide with emission of various radiations spontaneously. It is called radioactivity of nucleus. Emission of rays like alpha, beta and gamma rays occur in the process which changes the identity of nucleus.
During a nuclear change, an element undergoes change in its
Answer to Problem 93A
Merit of short half life radioisotope: they decay away in short duration before the radioactive radiation can harm the healthy cells of the body.
Demerit of short half life radioisotope: they tend to act quickly but this can be dangerous as they dose a patient heavily in short duration.
Explanation of Solution
Radioisotopes are used in medical applications like imaging purpose emit gamma rays of sufficient energy which must decay away in shorter duration after imaging or diagnosis is over, so that it doesn’t damage the human body and only reach or affect the targeted part or cells.
Radionuclide with short half-life tends to act quickly but this can be dangerous as they dose a patient heavily in short duration. If not used in calculated dosage, they can be fatal because of their rapid action.
Merit of short half life radioisotope: they decay away in short duration before the radioactive radiation can harm the healthy cells of the body.
Demerit of short half life radioisotope: they tend to act quickly but this can be dangerous as they dose a patient heavily in short duration.
Chapter 24 Solutions
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